Well, after looking at all the Nexus 5 hoopla the past few hours (they have some damned nice cases available from Spigen for that thing, wish the LGOG would have sparked that kind of interest, oh well) I figured I'd ask this question so, the poll above pretty much covers it.
If LTE is working for you I'd appreciate knowing it, and the setup you have with it working. A few of us that have the LGOG and had working LTE which suddenly just up and died on us are trying to figure out exactly why it suddenly just up and died on us, perhaps some more info in a thread geared towards it specifically might help.
Thanks...
For the record: I'm running the stock 4.1.2 build with the stock AT&T JB radio currently, using a T-Mobile $30/month plan and the LTE functionality worked fine the first day or so I got the LGOG just by adding the APN for it (fast.t-mobile.com) - I didn't have to do anything else, didn't even have to change anything network related: when I originally got this LGOG about 2 weeks ago all I did was add that APN and LTE worked as noted by the 4G/LTE icon on the status bar. After a day or so of using it the icon changed to the standard 4G icon and the LTE functionality never returned and still hasn't.
The vast majority of tmous users don't get lte on e970. Check att lte freqs vs tmo freqs in your area.
Sent from my LG Optimus G using XDA Premium 4 mobile app
As I said in the post above, it DID work when I first got the LGOG about two weeks ago, and here in Vegas T-Mobile very much has their actual LTE service enabled (as noted, Las Vegas was the first city in the US where they "flipped the switch" so we technically had it before anybody else did). There are a number of other owners that have had it working when they first started using the T-Mobile SIM cards, but over random periods of time the LTE functionality just stops working, kaput, clear out of the blue and then we just can't seem to get it functional again.
It's not a T-Mobile issue because their coverage here in downtown Vegas where I happen to live blankets the area completely and again it DID work just fine, with two different (yet same series) T-Mobile SIM cards, but then it just stops working and I/we would like to work on a solution as to why it did or does work then it suddenly stops.
I don't really care about actually using it in most situations, I just care that it should work since the LGOG covers the frequencies where T-Mobile provides LTE service, that it did work for myself and others, and then for some unknown reason it stops working and I/we can't figure out the specific reason(s) for it to just stop.
Have you tried these APN settings?
Name: MetroPCS LTE
APN: fast.metropcs.com
Proxy: blank
Port: blank
Username/Password: blank
Server: Not set
MMSC: http://metropcs.mmsmvno.com/mms/wapenc
MMS proxy: not set
MCC: 310
MNC: 260
Authentication Type: not set
APN type: default,mms,supl
APN protocol: ipv4
APN roaming protocol: ipv4
T- Mobile largely gained LTE in the Vegas area by acquiring MetroPCS. Their LTE is on the CDMA spectrum and T- Mobile is broadcasting on gsm. That might be part of your problem. TMO is probably relying on the MPCS equipment in Vegas.
Sent from my LG Optimus G using xda app-developers app
Hadn't considered that, Jank4AU, but I did just try adding that APN info and still no success with LTE. As stated, it did work originally because within an hour of getting this LGOG I had installed Speedtest and ran some here where I live and I had varied results from 28 to 35-36 Mbps - since this phone is only capable of 21Mbps HSPA+, and not the 42Mbps aspect, and since it was clearly showing the 4G LTE icon on the status bar, I know it was working at least for a brief period of time and I know the hardware is capable of it.
It's funny in some respects because earlier when I tried that 4.4 AOSP that houstonn has created I noticed that the default APNs (whereas with the stock ROM I have no defaults at all) pulled from the SIM card are:
MetroPCS (fast.metropcs.com)
T-Mobile GPRS (no APN info set)
T-Mobile GPRS (fast.t-mobile.com)
Alas, no matter what I do it just won't enable LTE. When I bring up the available networks on the stock ROM (4.1.2) I get what's pictured as attached, so the phone most definitely can see the T-Mobile LTE network, but whenever I attempt to connect to it there will be a ~30 second delay with nothing happening, then it just reverts to HSPA.
This fiasco is baffling...
Related
Just wondering, what is the typical data H+ speed for AT&T? I just downloaded speedtest.net and my test result don't look promising. This is a unroot and still stock.
190kps for download, 434kbps for upload and 151ms for ping.
I usually get about 5mbps down and 1.5mbps up in Louisville KY on H+
Sent from my AT&T cellular device.
those speeds are extremely slow but speeds will vary depending on your area. You can't judge your phone based on someone else's speeds, unless they're in your same area.
The other thing to do is run a speedtest from your phone's browser:
http://www.speakeasy.net/speedtest/
Open that link and run the test. There are many people that had a problem with accuracy with the speedtest app.
Thanks everyone for the quick reply.
@ nyydynasty - I am in the Los Angeles, CA area. The reason I asked because everything seem to be real slow when it come to my data conection. My wifi connection at home (when I connected to it) is a lot faster connection in comparison. I am not trying to compare or guage the speed. The reason I asked is to see if I should call up AT&T and complaint at them to see why my connection seem slow.
My connection varies greatly. My speeds are either 1 meg a second or up to 5 when I'm in nyc. My connection can go down really quickly though, and I'll average like 300 kb a second.
Sent from my GT-I9100 using Tapatalk
Waddle said:
My connection varies greatly. My speeds are either 1 meg a second or up to 5 when I'm in nyc. My connection can go down really quickly though, and I'll average like 300 kb a second.
Click to expand...
Click to collapse
Thanks, that should be enough for me to call AT&T to see if there is a problem or not.
nyydynasty said:
http://www.speakeasy.net/speedtest/.
Click to expand...
Click to collapse
Wow 1.2mbps d/l and .12 u/l. Still it is slow.
Sent from my SAMSUNG-SGH-I777 using XDA App
My average is 4 down (I get a 6 every now and then) and 1.5 up. Lte is already available in my area and I have seen a Skyrocket clock 30 down.
Sent from my SGH-I777 using xda premium
5-6 down tops, and I'm in Phoenix, so LTE's in my area. Have yet to see a person with an LTE AT&T phone though. On the other hand, I've seen a Droid Razr pull down ~15 with only 3 bars.
At my house it had better connection. 2.4 d/l and 0.5 u/l
Sent from my SAMSUNG-SGH-I777 using XDA App
With the link it's 3.7 and 0.88 from my house.
Sent from my SAMSUNG-SGH-I777 using XDA App
I usually get between 6-7.5 Down & 2-3 Up on My Galaxy Nexus using AT&T... Funny thing is i'm still using a European baseband..
Sent from my Galaxy Nexus using xda premium
in my area (MN) i get around 2-5 down, about 1 up. If you do decide to go with a custom ROM, give some different modems a try. Originally i'd rarely get over 1 down, then i decided to go through a few modems and saw some moderate improvements. Some say it makes no difference for them, but it definitely did for me.
Orange County Ca so your area should be closer to that. I live on the border of La and Orange County and the lowest i ever VHF et UNLESS i am bekng throttled is about 3-5Mbs download and as high as 7-10Mbs download being more normal.
EDIT: I think it helps tbat since i am rooted I have modified my build.prop fkr the faster speeds. Plus you can get more if you edit your apn settings (which I am not doing at this point with this pic)
Sent From My KickAss ATT SGS2 SPORTING CM7
Here in Ohio on my sgs2 I have had as good as 5-6 down and 2.3 up
Sent from my SAMSUNG-SGH-I717 using xda premium
For me, it ranges from 1-11 down and ~1 up
On the speakeasy speedtest, It's said I've gotten up to 12mbps down at one point. Speedtest app usually never gets over 6-7
Thanks everyone for the inputs, that tells me that my speed suck in my area. (or I am being throttled, I hope not.)
And this is the first time I got the data line since I have been with AT&T. It's only been a few months.
I doubt that I will root this phone anytime soon, it's still on the 2 years contract (got 22 months to go).
@ ROckRatt - What APN setting did you use? May be I can add a new APN and try to use that to see if I get better connection.
I would love to get it up to at least 5 or 6 download and 2 upload.
BeenAndroidized said:
Thanks everyone for the inputs, that tells me that my speed suck in my area. (or I am being throttled, I hope not.)
And this is the first time I got the data line since I have been with AT&T. It's only been a few months.
I doubt that I will root this phone anytime soon, it's still on the 2 years contract (got 22 months to go).
@ ROckRatt - What APN setting did you use? May be I can add a new APN and try to use that to see if I get better connection.
I would love to get it up to at least 5 or 6 download and 2 upload.
Click to expand...
Click to collapse
First I would call att and make sure they switched you to the 4G plan, sounds like they still have you on the 3G plan. Here are the APN settings I usually use but I do not remember if you can make them or set them up without being rooted. Most all of us are also on the contract with att also. I got mine in October if I remember correctly, whatever the first week it came out. So read up about flashing roms and just make sure to also download the return to stock packages IN CASE you ever need to return it to complete stock without att ever even knowing it was rooted and rom'd. Yoj will even be happier once you learn how.
My APN Test Settings
APN #1
NAME: ATT HSPA+
APN: phone
MMS port: 80
APN TYPE: default,internet,broadband
APN#2
ATT MMS
APN: wap.cingular
USERNAME: [email protected]
MMSC: http://mmsc.cingular.com
MMS PROXY: wireless.cingular.com
MMS PORT: 80
MNC: 410
MCC: 310
APN TYPE: default,mms,supl
Sent From My KickAss ATT SGS2 SPORTING CM7
I have similar setup for my APN 1 and APN 2.
The only Different is the APN TYPE.
APN 1 APN TYPE: I only have internet option
APN 2 APN TYPE: I have mms and supl option.
My Current APN Test Settings.
APN #1
NAME: MyAPN
APN: phone
MMS port: 80
APN TYPE: internet
APN#2
ATT MMS
APN: phone
USERNAME: blank
MMSC: http://mmsc.cingular.com
MMS PROXY: wireless.cingular.com
MMS PORT: 80
MNC: 410
MCC: 310
APN TYPE: mms
Mods please sticky this.
There's been several threads with people saying that they are getting intermittent slow or no data connections. Some people suspected throttling.
I did some digging around and found that it is a common issue on all ATT LTE phones. I have read up on various fixes, found one that worked, and will summarize it here.
Create a new APN that is EXACTLY the same as your current one with two exceptions:
1. APN: phone
2. APN type: internet
Save the APN. You should now have 2 APNs. Make sure that the original AT&T PTA APN is the selected one with the green dot.
What we've done here is replace the APN just for internet, and left everything else the same. If you try setting the type of the new APN for everything, it breaks MMS.
There are several dead spots in my town where I get incredibly slow or no data , despite my wife's iPhone working just fine. I made this change and now it works perfectly. Same top speeds for upload and download.
The only thing I cannot test is LTE, since I am not in an LTE area. From what I've read, this is an LTW APN so it should work.
Thanks. Works great and I'm in LTE area.
Very interesting.. thanks for the post.
Just for clarity, we're not to remove "internet" from the original PTA, right?
Edit: Oh, and we can name it whatever we want, I'm assuming? Or does it have to match the original to replace it?
Plexicle said:
Very interesting.. thanks for the post.
Just for clarity, we're not to remove "internet" from the original PTA, right?
Edit: Oh, and we can name it whatever we want, I'm assuming? Or does it have to match the original to replace it?
Click to expand...
Click to collapse
You can't remove the original APN - it's not editable. Leave it as is.
You can name the new APN whatever you want, as long as the APN is called phone.
I am so excited to test this out. I just entered those settings and will report back at the end of the day with my results.
I'm in an LTE area as well and have been experiencing an issue where every time my phone goes to sleep google talk looses connection and I no longer get any push notifications for gmail or my exchange email.
camaroz28 said:
I am so excited to test this out. I just entered those settings and will report back at the end of the day with my results.
I'm in an LTE area as well and have been experiencing an issue where every time my phone goes to sleep google talk looses connection and I no longer get any push notifications for gmail or my exchange email.
Click to expand...
Click to collapse
I'm waiting for your response.. lol
Sent from my SAMSUNG-SGH-I717 using xda premium
So far, so good here.
Sent from my SAMSUNG-SGH-I717 using XDA App
Will see if this helps at all. Suddenly I am having a tong of issues with data on the Note. My skyrocket had no issues in this area. The Note just started experiencing issues yesterday. called att and they reset the data connection on their end and it worked for a few hours.
The oddest part is that the indicator shows I am connected
In an lte area btw.
Oh...another oddity...when calling in to att the guy said his system showed my phone was connected to wifi....my wifi was not even on
Sent from my SAMSUNG-SGH-I717 using XDA App
How do you change does settings on phone?
Sent from my SPH-D710 using xda premium
Nevermind previous post....
Please note, PTA APN is required if you want to use LTE. Phone APN is for HSPA+. If you are in the area where there is no LTE service, this might be the solution for you as AT&T has a network issue ever since it launched LTE that LTE phones with PTA APN can't get consistent internet access when there is no LTE signal.
So, don't DO this if you are in a LTE area. Or else, you will be forced into HSPA+ network instead of LTE network you paid for.
If you select the phone apn yes....you will be forced into hspa. ..actually in my case it went to no cell connection at all.
There is a theory that simply having it there but not selecting it may help...which doesnt make sense but I am testing it regardless
foxbat121 said:
Please note, PTA APN is required if you want to use LTE. Phone APN is for HSPA+. If you are in the area where there is no LTE service, this might be the solution for you as AT&T has a network issue ever since it launched LTE that LTE phones with PTA APN can't get consistent internet access when there is no LTE signal.
So, don't DO this if you are in a LTE area. Or else, you will be forced into HSPA+ network instead of LTE network you paid for.
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I717 using XDA App
00mred00 said:
If you select the phone apn yes....you will be forced into hspa. ..actually in my case it went to no cell connection at all.
There is a theory that simply having it there but not selecting it may help...which doesnt make sense but I am testing it regardless
Sent from my SAMSUNG-SGH-I717 using XDA App
Click to expand...
Click to collapse
that's basically what this is - having it there but not selecting it. its almost as if it uses it as a fallback when the PTA apn can't get connected in an hspa area. this would explain why my hspa issue is fixed and others can still connect to lte just fine.
This problem is quite wide spread when Skyrocket was first released. Can't believe AT&T still haven't sort this out.
Sent from my SAMSUNG-SGH-I777 using XDA App
I did this. Now my data works incredibly well in an LTE area but my MMS is not working anymore...
jblaze5779 said:
I did this. Now my data works incredibly well in an LTE area but my MMS is not working anymore...
Click to expand...
Click to collapse
then you did it wrong. make sure the original PTA apn is the selected one, not the new one. also make sure the new apn type is only internet. I had the same issue when I made those mistakes when I was first testing.
Did this and does not work as people have stated. Doing speed test before adding the apn I would get lte speeds. After adding the phone apn my speed test decreased considerably. This was with att pta selected as well.
ATT has to fix the connectivity issues. For myself, when I do speedtest on lte, it is very sporadic! It times out sometimes while doing speedtest. It's very annoying!
mron0903 said:
Did this and does not work as people have stated. Doing speed test before adding the apn I would get lte speeds. After adding the phone apn my speed test decreased considerably. This was with att pta selected as well.
ATT has to fix the connectivity issues. For myself, when I do speedtest on lte, it is very sporadic! It times out sometimes while doing speedtest. It's very annoying!
Click to expand...
Click to collapse
it works for those of us in hspa areas. i guess it isn't going to work for lte areas.
I did the fix and still got 17MBPS on speedtest. I got my mms working btw.
Hrm...i think peopke are doing it wrong. In an lte area, Added it per the directions and the connection issues are slighty better...not completely gone.
No difference in speeds. Lte is the same..hspa+ is the same
Sent from my SAMSUNG-SGH-I717 using XDA App
I have two SCH-I545, one on NC5 stock rooted, one on MDK running CM11 nightlies. I got a Cricket sim and service for a month to see if I could get everything going, and all but LTE is golden. If anyone has any help for me on getting LTE going, I would certainly appreciate it. I believe Cricket uses the AT&T LTE network around here, but I am unsure. The NC5 phone has a constant notification:
Phone activation
This SIM card is from an unknown source.
Click to expand...
Click to collapse
I believe there are ways around that.
Below are the APN settings from their website which I can confirm get up to HSPA+ and MMS working:
Name: Internet
APN: ndo
Proxy: Not Set
Port: Not Set
Username: Not Set
Password: Not Set
Server: Not Set
MMSC: http://mmsc.aiowireless.net
MMS Proxy: proxy.aiowireless.net
MMS Port: 80
MCC: 310
MNC: 150
Authentication type: Not Set
APN type: default,mms,fota,hipri,supl
Click to expand...
Click to collapse
The only differences between the ones on their site and those successfully pushed to my MDK are the name and the pushed did not include "hipri," in the APN type. Both worked fine except for LTE.
stoicwood said:
The NC5 phone has a constant notification...
I believe there are ways around that.
Click to expand...
Click to collapse
It looks like all it takes is clearing data on the "Setup Wizard" app to get rid of the notification. I was hoping I could turn it off, but there may not be a need. Now all that remains is LTE.
Edit: I jumped the gun on that. The notification still comes up on reboot. Force stop gets rid of it, and probably freezing the "Setup Wizard" app (root required).
Any update on this?
Can LTE work on a Verizon S4?
What kind of speeds are you getting with HSPA+?
I am currently running Hyperdrive 18.1, would I have to flash back to NC5?
Thanks
Sent from my Lenovo U310 using Tapatalk
sambrooke said:
Any update on this?
Can LTE work on a Verizon S4?
What kind of speeds are you getting with HSPA+?
I am currently running Hyperdrive 18.1, would I have to flash back to NC5?
Thanks
Sent from my Lenovo U310 using Tapatalk
Click to expand...
Click to collapse
+1 I currently have a cricket SIM and get up to HSPA+. Still looking for a way to get LTE.
Sent from my SCH-I545 using XDA Free mobile app
I learned that on both straight talk and cricket, lte will not work on Verizon phone.
I have all three sims and have been testing in an att phone and a verizon phone.
The att phone gets lte logo with both cricket and straight talk.
The cricket line caps at about 8 mbps which is really not lte despite it saying that at the top of the phone.
Straight talk goes up to 27 mbps at the same location. verizon gets 80 down.
cricket must cap the lte speeds.
So bottom line, if you want real lte speeds either stick with Verizon or get an att phone or unlocked phone and try straight talk.
Sent from my SCH-I545 using Tapatalk
stoicwood said:
The NC5 phone has a constant notification:
[...]
I believe there are ways around that.
Click to expand...
Click to collapse
I used an app called "No Bloat" to disable the "SamsungSetupWizard.apk"
Below are the APN settings from their website which I can confirm get up to HSPA+ and MMS working:
[...]
The only differences between the ones on their site and those successfully pushed to my MDK are the name and the pushed did not include "hipri," in the APN type. Both worked fine except for LTE.
Click to expand...
Click to collapse
I am pretty sure that LTE on this phone uses different bands than Cricket uses. So physically the phone is incapable of LTE on the cricket network.
When I set my phone to "Global" or "LTE/CDMA" mode, I get the "4G" icon on top of the screen... BUT... i cannot send text messages. (can recieve them thought!)
Test messages only works for "GSM / UMTS" mode. At that point i get "H" or "H+" on top of the screen.
I think the phone is programmed to display "4G" just because it's in LTE mode regardless of what the actual connection is.
So my wife and I are probably leaving Verizon for Cricket. Even with paying the ETF for both phones we'll save over $500 compared with staying with Verizon until our contact expires next fall.
Anyway, I'm not sure how this works with rooting/ROMing. Will I still be able to flash VS985 ROMs (currently using a stock, rooted 11C ROM)? Specifically, if/when AOSP ROMs come out can I run them, despite being designed for Verizon, and still connect to Cricket? I've never not been on Verizon's network, so this is all unfamiliar to me. Thanks in advance for any help.
Someone correct me if I am wrong. You just need to update your apn settings. Your phones are already unlocked.
millerd79 said:
Someone correct me if I am wrong. You just need to update your apn settings. Your phones are already unlocked.
Click to expand...
Click to collapse
I was hoping this would be the answer. I suspected it might be, so thanks for suggesting it might be, even if you're not 100% correct. Hopefully someone else can chime in with a definitive answer.
Rodeojones said:
I was hoping this would be the answer. I suspected it might be, so thanks for suggesting it might be, even if you're not 100% correct. Hopefully someone else can chime in with a definitive answer.
Click to expand...
Click to collapse
I know this isn't cricket, but I think it'll help you get closer to an answer: http://forum.xda-developers.com/verizon-lg-g3/general/factory-unlocked-lte-t-mobile-t2828543
If t-mobile and straight talk work after apn settings change I guess cricket should work too.
Let us know if it works please. Saving $ is always a good thing
startswithPendswithOOH said:
I know this isn't cricket, but I think it'll help you get closer to an answer: http://forum.xda-developers.com/verizon-lg-g3/general/factory-unlocked-lte-t-mobile-t2828543
If t-mobile and straight talk work after apn settings change I guess cricket should work too.
Let us know if it works please. Saving $ is always a good thing
Click to expand...
Click to collapse
Thanks. I'll be sure to give it a try once we make the switch and update this thread with the results. Probably not until later this week.
EDIT: Looks like I'll be holding off on making a change for a bit. AT&T hasn't yet turned on LTE in my area - coverage is quite spotty (rural western Wisconsin). Perhaps in a couple months.
On my vs985 I use it with a Cricket pre-paid sim and after getting the settings right I get LTE and H+ (which is just as good usually), where available on Band4. Cricket is full-time throttled, though, but it is usually unnoticeable unless running a speed test.
You will still have a vs985 device though, so you will only be able to flash vs985 firmware.
Sent from my VS985 4G using Tapatalk
trent999 said:
On my vs985 I use it with a Cricket pre-paid sim and after getting the settings right I get LTE and H+ (which is just as good usually), where available on Band4. Cricket is full-time throttled, though, but it is usually unnoticeable unless running a speed test.
You will still have a vs985 device though, so you will only be able to flash vs985 firmware.
Sent from my VS985 4G using Tapatalk
Click to expand...
Click to collapse
Thanks dude. Appreciate the info.
unlocked?still having data issues..
I'm just curious, I am with cricket on a vs985 but i never get lte and its never worked using the global settings,.. I have text in the roaming options that says to call the 1-800# to pay for global? I can make calls and i put in crickets apn,but no luck..help.
trent999 said:
On my vs985 I use it with a Cricket pre-paid sim and after getting the settings right I get LTE and H+ (which is just as good usually), where available on Band4. Cricket is full-time throttled, though, but it is usually unnoticeable unless running a speed test.
You will still have a vs985 device though, so you will only be able to flash vs985 firmware.
Sent from my VS985 4G using Tapatalk
Click to expand...
Click to collapse
Could you PM me the settings you are using? I am trying to use my Verizon LG G3 and I can only get H, and MMS is not working despite my using the same settings on my other cricket phones. Customer Service/Support is useless because they just keep telling me my phones are not compatible and that I need to buy their phones. I'd like to keep my G3's and use them. My Droid Turbo works excellent on Cricket, but not getting LTE in the Richmond, VA area. Thanks.
Name: Internet
APN: ndo
Proxy: Not Set
Port: Not Set
Username: Not Set
Password: Not Set
Server: Not Set
MMSC:http://mmsc.aiowireless.net
MMS Proxy: proxy.aiowireless.net
MMS Port: 80
MCC: 310
MNC: 150
Authentication type: Not Set
APN type: default,mms,fota,hipri,supl
Type it in exactly how it is.
I work for cricket and I use my vzw g3 on it. All working you won't het LTE only h+
stuck
Just got a G3 on Sunday. The phone is amazing! However, mms does not work for me. I have HSPA and sms working but NO GO on mms. I am in the Wichita, KS market. Can you tell me if that could be part of the problem?
I have VZW LG G3 on Cricket and I get LTE on Android 4.4 but no LTE on Android 5.0, does anybody know why?
I just got this device, and following Cricket's BYOD APN settings...I am getting HSPA+ (no 4G LTE, as Verizon phones do not have AT&T's LTE compatible bands).
The problem I am having is with MMS. I am not able to recieve MMS.
I have tried and tested every option involved with the combinations of Network Modes: Global, LTE/CDMA, LTE/GSM/UMTS as well as their individual Network submode settings.
If anybody has any information please help. Thank you!
I was having the same problem with stock sms/mms so I switched to Textra. Make sure the apn settings for mms are set in the Textra app
Are you running the network in Global mode?
No lte/gsm
I searched the web for 15 minutes and came up with nothing good, so I'm asking the general audience here at XDA.
Basically, it comes down to: If I need to use APN settings for my carrier, like using Verizon Note4 on T-Mobile network, what happens when my phone connects to another carrier like AT&T with HSPA+ that doesn't match up to the current APN settings?
The immediate answer appears to be that I won't get any data while on the AT&T network.
In more detail:
I have a Note 4 that was purchased through Verizon long ago. I recently rooted and rommed this device to CyanogenMod and put a T-Mobile SIM in it. I added the T-Mobile APN settings and it works fine on T-Mobile LTE since the Note4 has the correct 700MHz band (or whatever). However, when I'm driving to work, the connection drops from T-Mobile and it hooks up to AT&T (I think) and shows H+ in my notification bar. I assume that's HSPA+ from AT&T, as that is the only carrier that has HSPA+ in my entire state. When it does this, I believe that my data connection does not work because SiriusXM stops playing music and stuff. Sometimes the Note4 will reconnect to T-Mobile network pretty quickly and SiriusXM resumes playing (at 2x speed like Chipmunks....it's a terrible app honestly).
I'm wondering if I need APN settings for the AT&T HSPA+ network that my phone connects to while driving. Which makes me wonder how APNs work, like does the phone detect which one it needs to use as your cellular connection changes. Or can you combine 2 APN's to help my situation somehow? Is this why people have multiple SIM cards?
Thanks!